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单选题
肾挫伤非手术治疗至少需要绝对卧床（）
A
1周
B
2周
C
3周
D
4周
E
5周
参考答案
参考解析
解析：
肾挫伤患者需要绝对卧床休息2～4周，即使血尿消失，仍需继续卧床休息至预定时间。
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